What is 0892 gold mean?

Why did my topps 1991 complete baseball card set decrease in value over the last 20years... aren't they supposed to be worth more now? What is Value of the H stamp? Value of autograph Wernher von Braun? What is the weight of a British Sixpence? Your brother has a Elizabeth 2 dg Regina penny with a bird on the back and the date is 1867-1967 is this worth anything? How much is a 1993 Dale Earnhardt back in black the 16000000 man worth? Value of a 1972-S penny with a gold tint and sticks to a magnet? What is a 1991 signed Richard Petty trading card worth? What is an LC tray? What does it mean to have fid def ind imp 2 shillings 1948 inscribed in a ring? How much is a Spirit of the Crow Franklin Mint worth? When did the guinea go out of circulation? What is the population of the mountain lion? Are 1956 British Halfcrowns and Florins scarce and what value are they if they are available? What is the value of a 1960's polaroid camera? What is the last year Canadian coins were silver? How do you log into pokemoncrater? Which is correct to be written on a wreath the Eddy's or the Eddys or possibly the Eddys'? What is the value of a 1983 Bailiwick of Jersey 20 Pence coin? How much the coin worth it has a 100 and a flower on the back?